package com.atguigu.tingshu.album.service.impl;

import com.alibaba.fastjson.JSONObject;
import com.atguigu.tingshu.album.mapper.*;
import com.atguigu.tingshu.album.service.BaseCategoryService;
import com.atguigu.tingshu.common.cache.TsCache;
import com.atguigu.tingshu.model.album.*;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import io.swagger.v3.core.util.Json;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Service
@SuppressWarnings({"all"})
public class BaseCategoryServiceImpl extends ServiceImpl<BaseCategory1Mapper, BaseCategory1> implements BaseCategoryService {

	@Autowired
	private BaseCategory1Mapper baseCategory1Mapper;

	@Autowired
	private BaseCategory2Mapper baseCategory2Mapper;

	@Autowired
	private BaseCategory3Mapper baseCategory3Mapper;


	@Autowired
	private BaseCategoryViewMapper baseCategoryViewMapper;

	@Autowired
	private BaseAttributeMapper baseAttributeMapper;

	@Override
	public List<JSONObject> getBaseCategoryList() {
		//创建集合对象
		List<JSONObject> list = new ArrayList<>();
		//查看所有分类数据
		List<BaseCategoryView> baseCategoryViewsList = baseCategoryViewMapper.selectList(null);
		//按照一级分类Id进行分组 key：一级分类Id，value：一级分类id对应的数据库
		Map<Long, List<BaseCategoryView>> basecategory1Map = baseCategoryViewsList.stream().
				collect(Collectors.groupingBy(BaseCategoryView::getCategory1Id));
		//循环遍历数组
		Iterator<Map.Entry<Long, List<BaseCategoryView>>> iterator = basecategory1Map.entrySet().iterator();
		while (iterator.hasNext()){
			//	获取entry对象
			Map.Entry<Long, List<BaseCategoryView>> entry = iterator.next();
			//	获取数据
			Long category1Id = entry.getKey();
			List<BaseCategoryView> categoryViewList = entry.getValue();
			//	JSONObject  extends JSON implements Map<String, Object>
			JSONObject category1 = new JSONObject();
			category1.put("categoryName",categoryViewList.get(0).getCategory1Name());
			category1.put("categoryId",category1Id);
			//	获取一级分类下的二级分类数据;
			Map<Long, List<BaseCategoryView>> category2Map = categoryViewList.stream().collect(Collectors.groupingBy(BaseCategoryView::getCategory2Id));
			Iterator<Map.Entry<Long, List<BaseCategoryView>>> iterator1 = category2Map.entrySet().iterator();
			//	存储到二级分类数据：
			List<JSONObject> categoryChild2List = new ArrayList<>();
			while (iterator1.hasNext()){
				//	获取二级分类对象数据 音乐层级下应该有3次循环;
				Map.Entry<Long, List<BaseCategoryView>> entry1 = iterator1.next();
				Long category2Id = entry1.getKey();
				//	获取到的数据是二级分类Id 对应的集合数据
				List<BaseCategoryView> categoryViewList1 = entry1.getValue();
				JSONObject category2 = new JSONObject();
				category2.put("categoryName",categoryViewList1.get(0).getCategory2Name());
				category2.put("categoryId",category2Id);
				//	获取三级分类数据：直接循环遍历获取三级分类数据即可
				List<JSONObject> categoryChild3List = categoryViewList1.stream().map(baseCategoryView -> {
					//	创建三级分类对象
					JSONObject category3 = new JSONObject();
					category3.put("categoryId", baseCategoryView.getCategory3Id());
					category3.put("categoryName", baseCategoryView.getCategory3Name());
					//	返回数据
					return category3;
				}).collect(Collectors.toList());
				//	获取三级分类数据添加到二级分类中;
				category2.put("categoryChild",categoryChild3List);
				categoryChild2List.add(category2);
			}
			//	将二级分类数据添加到一级分类中;
			category1.put("categoryChild",categoryChild2List);
			//	将所有一级分类对象添加到集合中
			list.add(category1);
		}
		return list;
	}

	@Override
	public List<BaseAttribute> findAttribute(Long category1Id) {
		//调用mapper层的方法
		return baseAttributeMapper.selectAttribute(category1Id);
	}

	@Override
	@TsCache(keyPrefix = "categoryView")
	public BaseCategoryView getBaseCategoryView(Long category3Id) {
		return baseCategoryViewMapper.selectById(category3Id);
	}

	@Override
	public JSONObject getBaseCategoryList(Long category1Id) {
		//创建一个一级分类对象
		JSONObject category1 = new JSONObject();
		//封装页面需要的数据值
		category1.put("categoryId",category1Id);
		//根据业务分析通过一级分类Id查询视图比较方便
		List<BaseCategoryView> baseCategoryViewList = baseCategoryViewMapper.selectList(new LambdaQueryWrapper<BaseCategoryView>().eq(BaseCategoryView::getCategory1Id, category1Id));
		//查询一级分类名称
		category1.put("categoryName",baseCategoryViewList.get(0).getCategory1Name());
		//需要封装二级，三级分类数据
		Map<Long, List<BaseCategoryView>> baseCategory2Map = baseCategoryViewList.stream().collect(Collectors.groupingBy(BaseCategoryView::getCategory2Id));
		Iterator<Map.Entry<Long, List<BaseCategoryView>>> iterator = baseCategory2Map.entrySet().iterator();
		//声明二级分类集合
		List<JSONObject> categoryChild2List = new ArrayList<>();
		while (iterator.hasNext()){
			//获取map中的entry对象
			Map.Entry<Long,List<BaseCategoryView>> entry = iterator.next();
			//获取二级分类Id
			JSONObject category2 = new JSONObject();
			category2.put("categoryId",entry.getKey());
			//获取二级分类名称
			category2.put("categoryName",entry.getValue().get(0).getCategory2Name());
			//存储三级分类数据
			List<JSONObject> categoryChild3List = entry.getValue().stream().map(baseCategoryView -> {
				//创建三级分类对象
				JSONObject category3 = new JSONObject();
				category3.put("categoryId", baseCategoryView.getCategory3Id());
				category3.put("categoryName", baseCategoryView.getCategory3Name());
				//返回数据
				return category3;
			}).collect(Collectors.toList());
			//二级分类中保存三级分类数据
			category2.put("categoryChild",categoryChild3List);
			//将二级分类对象添加进集合中
			categoryChild2List.add(category2);
		}
		//将二级分类数据保存到一级分类中
		category1.put("categoryChild",categoryChild2List);
		//返回一级分类对象
		return category1;
	}

	@Override
	public List<BaseCategory3> findTopBaseCategory3(Long category1Id) {
		//要先获取三级分类数据需要二级分类ID
		List<Long> category2IdList = baseCategory2Mapper.selectList(new LambdaQueryWrapper<BaseCategory2>().eq(BaseCategory2::getCategory1Id, category1Id))
				.stream().map(BaseCategory2::getId).collect(Collectors.toList());
		//构建查询条件
		LambdaQueryWrapper<BaseCategory3> wrapper = new LambdaQueryWrapper<>();
		wrapper.in(BaseCategory3::getCategory2Id,category2IdList).eq(BaseCategory3::getIsTop,1).last("limit 7");
		//返回分类数据集合
		return baseCategory3Mapper.selectList(wrapper);

	}
}
